US2612359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporative water cooler
Assignee: Servel Inc
•
Filing: 1947-03-26
•
Granted: 1952-09-30
•
Expires: 1967-03-26
Abstract
No abstract record available.
Inventors
- 👤 Walter M Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:36
CPC Classifications
F; F28; F28C; F28C1/00; F28C1/10; F28C1/02; F28F; F28F25/00; F28F25/02; F28F25/08; F28F25/082; Y; Y02; Y02B; Y02B30/00; Y02B30/70; Y10; Y10S; Y10S261/00; Y10S261/11
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB189502452A
Cited
GB190625449A
Cited
GB190709395A
Cited
GB117843A
Cited
US1785572A
Cited
US2347757A
Cited
US2342952A
Cited
US2356653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |